o2 sensor

alright i had the check engine light come on and one of the codes i pulled was p0031 HO2S Heater Control Circuit Low (Bank 1 Sensor 1). my question is where is this located and where can i buy one online? i looked on rockauto.com and cant tell if i need a downstream or upstream? too many choices. its under the emissions section then o2 sensors and there are two denso oem type sensors to choose from and a bunch of other ones. anythoughts

 

One of the codes? I think maybe it would not be a bad idea to replace all the sensors. How many miles on them? usually when one goes, the others are not far behind. Pay now ,....or pay later. Good luck with it.

 

youll need to replace the sensor upstream of the cat closest to the engine since that is the one that pertains to bank 1 sensor 1.
here it is in the link http://www.rockauto.com/catalog/moreinfo.php?pk=870696
the one in this link http://www.rockauto.com/catalog/moreinfo.php?pk=991826 is for the sensor downstream of the cat.you may want to replace it at the same time for good measure.

 

you should also purchase a can of this to spray on the nuts before attempting to change out the sensors.

 

thaks shitroc just placed the order. and yeah i have a few cans of PB ready to go for those bolts. i would get both sensors but cant really afford it at the moment. now hopefully that damn check engine light will piss off ahah

 

no problem. it sucks having the CEL on, especially when the outcome is brutal gas mileage.

 

well i got it fixed install was a bit rough but i got er done. no CEL light for now so i guess we'll see what happens thanks for the advice shitroc appreciate it

 

youre welcome